Floor Drain Cover That Can Prevent Waste Water From Flowing Backward in a Floor Drain

ABSTRACT

A floor drain cover includes a draining frame, a net-shaped disk mounted in the top wall of the draining frame, a fixing bracket mounted on the draining frame, a movable lid pivotally mounted on the fixing bracket and movable relative to the draining frame, and a rubber pad mounted on the movable lid and movable to seal the bottom wall of the draining frame. Thus, when the ambient waste water in the floor drain flows toward the draining frame, the movable lid is pressed by the pressure of the ambient waste water so that the movable lid moves the rubber pad to seal the bottom wall of the draining frame, thereby preventing the ambient waste water in the floor drain from flowing backward, and preventing the floor from being contaminated by the ambient waste water.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a cover and, more particularly, to afloor drain cover that is mounted on a floor to cover a floor drain.

2. Description of the Related Art

A conventional floor drain cover comprises a draining frame mounted onand extended into a floor drain of a floor and a net-shaped disk mountedin the draining frame to provide a filtering function. Thus, the indoorwater is allowed to pass through the net-shaped disk and the drainingframe into the floor drain of the floor so that the indoor water on thefloor can be drained outward from the floor drain of the floor. However,when the ambient waste water in the floor drain flows toward thedraining frame due to an irregular condition, the ambient waste water isdirectly introduced through the net-shaped disk and the draining frameinto the floor so that the floor will be contaminated by the ambientwaste water.

BRIEF SUMMARY OF THE INVENTION

In accordance with the present invention, there is provided a floordrain cover, comprising a draining frame having an open top wall and anopen bottom wall, a net-shaped disk mounted in the top wall of thedraining frame, a fixing bracket mounted on the draining frame, amovable lid pivotally mounted on the fixing bracket and movable relativeto the draining frame, and a rubber pad mounted on the movable lid tomove in concert with the movable lid and movable to abut and seal thebottom wall of the draining frame.

The primary objective of the present invention is to provide a floordrain cover that can prevent waste water from flowing backward in afloor drain.

According to the primary objective of the present invention, when theambient waste water in the floor drain flows toward the draining framedue to an irregular condition, the movable lid is pressed by thepressure applied by the ambient waste water so that the movable lid ispivoted and moved upward to move the rubber pad to seal the bottom wallof the draining frame so as to close the bottom wall of the drainingframe and to interrupt the connection between the draining frame and thefloor drain, thereby preventing the ambient waste water in the floordrain from flowing backward into the draining frame and the floor, andthereby preventing the floor from being contaminated by the ambientwaste water.

Further benefits and advantages of the present invention will becomeapparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

FIG. 1 is a perspective view of a floor drain cover in accordance withthe preferred embodiment of the present invention.

FIG. 2 is an exploded perspective view of the floor drain cover as shownin FIG. 1.

FIG. 3 is a front cross-sectional view of the floor drain cover as shownin FIG. 1.

FIG. 4 is a schematic operational view of the floor drain cover as shownin FIG. 3 in use.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIGS. 1-3, a floor draincover 1 in accordance with the preferred embodiment of the presentinvention comprises a draining frame 11 having an open top wall 110 andan open bottom wall 112, a net-shaped disk 12 mounted in the top wall110 of the draining frame 11, a fixing bracket 13 mounted on thedraining frame 11, a movable lid 14 pivotally mounted on the fixingbracket 13 and movable relative to the draining frame 11, and a rubberpad 17 mounted on the movable lid 14 to move in concert with the movablelid 14 and movable to abut and seal the bottom wall 112 of the drainingframe 11.

The draining frame 11 is mounted on and extended into a floor drain 2 ofa floor 3. The draining frame 11 has a funnel shape and has a mediateportion formed with a tapered guide surface 114 disposed between the topwall 110 and the bottom wall 112 of the draining frame 11. The drainingframe 11 has a periphery provided with two opposite fixing pieces 111secured to the floor 3. The top wall 110 of the draining frame 11 has asize greater than that of the bottom wall 112 of the draining frame 11.

The rubber pad 17 is disposed between the movable lid 14 and the bottomwall 112 of the draining frame 11 and has a bottom face abutting a topface of the movable lid 14 and a top face that is movable to abut andseal the bottom wall 112 of the draining frame 11.

The fixing bracket 13 is located outside of the draining frame 11 and ismounted on a periphery of the bottom wall 112 of the draining frame 11.

The movable lid 14 is located under the bottom wall 112 of the drainingframe 11 and is received in the floor drain 2. The movable lid 14 has aperiphery provided with a pivot bracket 141 pivotally mounted on thefixing bracket 13 by a pivot pin 15. The pivot pin 15 extends throughthe pivot bracket 141 of the movable lid 14 and the fixing bracket 13.An elastic member 16 is mounted on the pivot pin 15 and has a distal endformed with an extension 161 pressing the top face of the movable lid14. The elastic member 16 is received in the fixing bracket 13.

The movable lid 14 has a central portion formed with a through hole 140,the rubber pad 17 has a central portion formed with a fixing hole 170,and a fastening member 18 is extended through the through hole 140 ofthe movable lid 14 and the fixing hole 170 of the rubber pad 17 toattach the rubber pad 17 to the movable lid 14.

In operation, referring to FIGS. 3 and 4 with reference to FIGS. 1 and2, when the indoor water flows through the net-shaped disk 12 into thedraining frame 11 to contact the rubber pad 17, the rubber pad 17 ispushed by the gravity of the indoor water to press the movable lid 14 sothat the movable lid 14 is pivoted and moved downward to open the bottomwall 112 of the draining frame 11 as shown in FIG. 3, thereby allowingthe indoor water to flow through the bottom wall 112 of the drainingframe 11 into the floor drain 2.

On the contrary, when ambient waste water in the floor drain 2 flowsupward to contact the movable lid 14, the movable lid 14 is pressed bythe pressure applied by the ambient waste water so that the movable lid14 is pivoted and moved upward to compress the elastic member 16 and tomove the rubber pad 17 to seal the bottom wall 112 of the draining frame11 so as to close the bottom wall 112 of the draining frame 11 as shownin FIG. 4, thereby preventing the ambient waste water in the floor drain2 from flowing backward into the draining frame 11 and the floor 3, andthereby preventing the floor 3 from being contaminated by the ambientwaste water.

Accordingly, when the ambient waste water in the floor drain 2 flowstoward the draining frame 11 due to an irregular condition, the movablelid 14 is pressed by the pressure applied by the ambient waste water sothat the movable lid 14 is pivoted and moved upward to move the rubberpad 17 to seal the bottom wall 112 of the draining frame 11 so as toclose the bottom wall 112 of the draining frame 11 and to interrupt theconnection between the draining frame 11 and the floor drain 2, therebypreventing the ambient waste water in the floor drain 2 from flowingbackward into the draining frame 11 and the floor 3, and therebypreventing the floor 3 from being contaminated by the ambient wastewater.

Although the invention has been explained in relation to its preferredembodiment(s) as mentioned above, it is to be understood that many otherpossible modifications and variations can be made without departing fromthe scope of the present invention. It is, therefore, contemplated thatthe appended claim or claims will cover such modifications andvariations that fall within the true scope of the invention.

1. A floor drain cover, comprising: a draining frame having an open topwall and an open bottom wall; a net-shaped disk mounted in the top wallof the draining frame; a fixing bracket mounted on the draining frame; amovable lid pivotally mounted on the fixing bracket and movable relativeto the draining frame; a rubber pad mounted on the movable lid to movein concert with the movable lid and movable to abut and seal the bottomwall of the draining frame.
 2. The floor drain cover of claim 1, whereinthe movable lid has a periphery provided with a pivot bracket pivotallymounted on the fixing bracket by a pivot pin.
 3. The floor drain coverof claim 2, wherein the floor drain cover further comprises: an elasticmember mounted on the pivot pin and having a distal end formed with anextension pressing a top face of the movable lid.
 4. The floor draincover of claim 3, wherein the elastic member is received in the fixingbracket.
 5. The floor drain cover of claim 1, wherein the rubber pad isdisposed between the movable lid and the bottom wall of the drainingframe.
 6. The floor drain cover of claim 5, wherein the rubber pad has abottom face abutting a top face of the movable lid and a top face thatis movable to abut and seal the bottom wall of the draining frame. 7.The floor drain cover of claim 1, wherein the fixing bracket is locatedoutside of the draining frame.
 8. The floor drain cover of claim 1,wherein the fixing bracket is mounted on a periphery of the bottom wallof the draining frame.
 9. The floor drain cover of claim 1, wherein thedraining frame is mounted on and extended into a floor drain of a floor;the draining frame has a periphery provided with two opposite fixingpieces secured to the floor.
 10. The floor drain cover of claim 9,wherein the movable lid is received in the floor drain.
 11. The floordrain cover of claim 1, wherein the movable lid is located under thebottom wall of the draining frame.
 12. The floor drain cover of claim 2,wherein the pivot pin extends through the pivot bracket of the movablelid and the fixing bracket.
 13. The floor drain cover of claim 1,wherein the movable lid has a central portion formed with a throughhole; the rubber pad has a central portion formed with a fixing hole;and the floor drain cover further comprises a fastening member extendedthrough the through hole of the movable lid and the fixing hole of therubber pad to attach the rubber pad to the movable lid.
 14. The floordrain cover of claim 1, wherein the top wall of the draining frame has asize greater than that of the bottom wall of the draining frame.
 15. Thefloor drain cover of claim 1, wherein the draining frame has a funnelshape and has a mediate portion formed with a tapered guide surfacedisposed between the top wall and the bottom wall of the draining frame.